Bolajoko Olusanya is a Nigerian/UK trained developmental pediatrician with a special interest in advancing optimal early childhood development (ECD) for children under 5 yrs of age with developmental disabilities in low and middle-income countries. She is the Director, Centre for Healthy Start Initiative, Ikoyi, Lagos, Nigeria. She is also the Coordinator of the Global Research on Developmental Disabilities Collaborators (GRDDC), a foremost culturally diverse partnership for data-driven ECD.